Jason Mack, Venture investor in New York is an active investor based in New York, New York. This profile covers what Jason Mack backs, at which stage, and how founders can reach out in 2026.
Jason Mack is the President of Mack Ventures, an asset manager at DAX Real Estate, and a Founding Advisor at Proximity.
Jason Mack invests in PropTech & Real Estate and Fintech, typically at Seed and Series A.
- Investor type
- VCAngel
- Stages
- SeedSeries A
- Invests in
- PropTech & Real EstateFintech
- Location
- New York, New York
- Typical check
- $625K
How to reach Jason Mack
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Round Funded. "Jason Mack." Round Funded investor database, updated November 3, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/jason-mack
Frequently Asked Questions
Who is Jason Mack?
Jason Mack, Venture investor in New York is an active investor based in New York, New York. Jason Mack invests in PropTech & Real Estate and Fintech, typically at Seed and Series A.
What does Jason Mack invest in?
Jason Mack invests in PropTech & Real Estate and Fintech, typically at Seed and Series A. Match your sector and stage, then reach out with a personalized pitch.
What stage does Jason Mack invest at?
Jason Mack typically invests at Seed and Series A. Lead with traction that fits the stage when you reach out.
What is Jason Mack's typical check size?
Jason Mack typically writes checks around $625K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.